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Quatech QSC(LP)-100, Руководство пользователя

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2.3 Force High-Speed UART Clock (X2, X4, or X8, J3-J5)

These jumpers force an increase of the UART input clock frequency by a

factor of two, four, or eight.  This feature can allow legacy software to use baud
rates above 115,200 bits per second.  It is also useful if the serial port device
driver does not directly support setting the higher baud rates through the Options
Register (see section 4.4).

If one of these jumpers is applied, it overrides any value written to the

Options Register to set the clock multiplier by software.  The effective baud rate
will be either two, four, or eight times the value for which the UART itself is
programmed.  

The factory default is none of these jumpers applied, which allows for

software control of the clock multiplier via the Options Register.  The Options
Register powerup default is for a standard times-1 clock of 1.8432 MHz for
compatibility with standard serial ports. 

SPAD

X2

X4

X8

J2

J3

J4

J5

Force times-eight clock

Baud rates up to 921.6 kbps

SPAD

X2

X4

X8

J2

J3

J4

J5

Force times-two clock

Baud rates up to 230.4 kbps

SPAD

X2

X4

X8

J2

J3

J4

J5

Factory default

software control

SPAD

X2

X4

X8

J2

J3

J4

J5

Force times-four clock

Baud rates up to 460.8 kbps

Figure 4 --- Clock multiplier jumper options

QSC(LP)-100 User's Manual

8

Содержание QSC(LP)-100

Страница 1: ...0 Four Channel Low Profile RS 232 Asynchronous Communications Adapter for PCI bus User s Manual QUATECH INC TEL 330 655 9000 5675 Hudson Industrial Parkway FAX 330 655 9010 Hudson Ohio 44236 http www quatech com ...

Страница 2: ...ined in this document during the warranty period Any damage that results from improper installation operation or general misuse voids all warranty rights Please complete the following information and retain for your records Have this information available when requesting warranty service DATE OF PURCHASE MODEL NUMBER QSC LP 100 PRODUCT DESCRIPTION Four Channel Low Profile RS 232 Asynchronous PCI B...

Страница 3: ...to ensure its accuracy and completeness In no event will Quatech Inc be liable for damages of any kind incidental or consequential in regard to or arising out of the performance or form of the materials presented in this document or any software programs that might accompany this document Quatech Inc encourages feedback about this document Please send any written comments to the Technical Support ...

Страница 4: ...ncil Directive 89 336 EEC Standards to which Conformity is Declared EN50081 1 EN55022 EN60555 2 EN60555 3 EN50082 1 IEC 801 2 IEC 801 3 IEC 801 4 Type of Equipment Information Technology Equipment Equipment Class Commercial Residential Light Industrial Product Name PCI Quad Serial Communications Card Model Number QSC LP 100 iv QSC LP 100 User s Manual ...

Страница 5: ... Windows 98 17 5 2 Windows 2000 16 5 1 Windows Millennium 16 5 Windows Configurations 15 4 4 2 Clock Rate Multiplier 14 4 4 1 Enhanced Serial Adapter Identification 14 4 4 Options Register 13 4 3 Interrupt Status Register 13 4 2 Enabling the Special Registers 12 4 1 Base Address and Interrupt Level IRQ 12 4 Address Map and Special Registers 10 3 Hardware Installation 9 2 3 Force High Speed UART Cl...

Страница 6: ...mputer s BIOS or operating system The four serial ports share a single interrupt line and are addressed in a contiguous block of 32 bytes A special interrupt status register is provided to help software to manage the shared interrupt The QSC LP 100 s serial ports are implemented using 16550 Universal Asynchronous Receiver Transmitters UARTs These UARTs contain hardware buffers FIFOs which reduce p...

Страница 7: ...ws the jumper configuration as shipped from the factory with two spare jumpers applied in neutral positions Remove one or both and apply as shown in following sections to set optional features SPAD X2 X4 X8 J2 J3 J4 J5 Figure 2 Factory default jumper configuration 2 2 Enable Scratchpad Register SPAD J2 In the default configuration an Interrupt Status Register see section 4 3 and an Options Registe...

Страница 8: ...ective baud rate will be either two four or eight times the value for which the UART itself is programmed The factory default is none of these jumpers applied which allows for software control of the clock multiplier via the Options Register The Options Register powerup default is for a standard times 1 clock of 1 8432 MHz for compatibility with standard serial ports SPAD X2 X4 X8 J2 J3 J4 J5 Forc...

Страница 9: ...e Option Retaining Bracket ORB screw 5 Replace the system cover according to the instructions provided by the computer manufacturer 6 Attach and secure the cable connectors to the desired equipment 7 Turn on the power of the computer system The output of the QSC LP 100 is a 44 pin D connector A cable is provided to convert the D 44 into four standard male D 9 connectors with all control signals pr...

Страница 10: ... to Base Address 31 Serial 4 Base Address 16 to Base Address 23 Serial 3 Base Address 8 to Base Address 15 Serial 2 Base Address 0 to Base Address 7 Serial 1 I O Address Range Port Figure 6 Port Address Map All four serial ports share the same IRQ The QSC LP 100 signals a hardware interrupt when any port requires service The interrupt signal is maintained until no port requires service Interrupts ...

Страница 11: ...rrupt Status Register removed 0 Register selected for address 7 accesses SPAD Jumper DLAB Bit Figure 7 DLAB bit selects between special registers 4 3 Interrupt Status Register The read only Interrupt Status Register can be used to quickly identify which serial ports require servicing after an interrupt Reading the Interrupt Status Register will return the interrupt status of the entire QSC LP 100 ...

Страница 12: ...ation The ID bits are used to identify the QSC LP 100 as a Quatech Enhanced Serial Adapter Logic operations are performed such that the values read back from these bits will not necessarily be the values that were written to them Bit ID1 will return the logical AND of the values written to ID 1 0 while bit ID0 will return their exclusive OR Software can thus identify a Quatech Enhanced Serial Adap...

Страница 13: ...ptions Register will always return the clock rate multiplier at which the board is operating 921 6 kbaud 14 7456 MHz X8 1 1 460 8 kbaud 7 3728 MHz X4 0 1 230 4 kbaud 3 6864 MHz X2 1 0 115 2 kbaud 1 8432 MHz X1 default 0 0 Maximum Data Rate UART Clock Frequency Clock Rate Multiplier RR0 RR1 Figure 11 Rate Register bit definition At powerup and reset the Options Register is initialized to 0 The QSC ...

Страница 14: ...egin Select Search for the best driver for your device Check the Removable media and Specify location box Click the Next button 2 Window will locate the proper INF file and copy the file from the CD Click the Next button 3 The final dialog screen will verify the file copy from theCD Click the Finish button QSC LP 100 User s Manual 14 ...

Страница 15: ...log box will appear Insert the Quatech COM CD shipped with the device Click the OK button 3 The following dialog box will display the appropriate INF file on the CD in the drive Click the OK button 4 Window will copy the INF file from the CD and display a final dialog indication that the process is complete Click the Finish button QSC LP 100 User s Manual 15 ...

Страница 16: ...ill appear at start up Click the Next button 2 Select Search for the best driver for your device Click the Next button 3 On the next dialog select the CD ROM DRIVE check box Insert the Quatech COM CD shipped with the device into the CD ROM drive Click the Next button QSC LP 100 User s Manual 16 ...

Страница 17: ...annels The Add New Hardware Wizard utility in Windows 95 was designed to add new hardware and update this registry An INF configuration file is included with the QSC LP 100 to allow easy configuration in the Windows 95 environment 5 5 Using the New Hardware Found Wizard The following instructions provide step by step instructions on installing the QSC LP 100 in Windows 95 using the New Hardware Fo...

Страница 18: ...ox will pop up The path should already be pointing to the Quatech disk Click the OK button to continue 7 You should now see the Copying Files dialog box as Windows 95 copies the driver files from the disk 8 The installation utility will ask for your Windows 95 installation disks Serial communication ports require two drivers supplied by Microsoft to function SERIAL VXD and SERIALUI DLL Insert the ...

Страница 19: ...ional information is available on any of these devices by click on the device name and then selecting the Properties button 3 Double click the device group Multi function Adapters The QSC LP 100 model name should appear in the list of Multi function adapters 4 Double click the QSC LP 100 model name and a properties box should open for the hardware adapter 5 Click the Resources tab located along th...

Страница 20: ...k the Properties button This action opens a properties dialog for the specific COM port on the QSC LP 100 8 Click the Port Settings tab and then click the Advanced button The QSC LP 100 driver will display a custom Advanced Port Settings control which allows the ports UART compatibility mode and FIFO threshold levels to be configured The threshold values of full scale for the transmit buffer and 3...

Страница 21: ...names to access the serial ports on your QSC LP 100 through your software applications Note The Logical COM Port name is assigned to your ports by Windows This name is required by a Windows application when accessing a particular port QSC LP 100 User s Manual 21 ...

Страница 22: ...anager 2 Double click on the hardware class Multi Port Serial Adapters to list hardware devices in the class 3 The QSC LP 100 parent device belongs to this hardware class The full device name for the QSC LP 100 is Quatech QSC LP 100 Four Port RS 232 Serial Adapter QSC LP 100 User s Manual 22 ...

Страница 23: ... Request resource allocations Do not change these settings without specific instructions from a Quatech Technical Support Specialist To exit without saving changes click the cancel button 5 Open the Properties dialog for the QSC LP 100 device then click the Advanced tab to view the clock rate settings QSC LP 100 User s Manual 23 ...

Страница 24: ...imics a standard COM port The hardware drivers lock the clock to the standard rate The port will run at the baud rate requested by the application 115 200 X1 Auto clock mode enables applications to request any baud rate up to 921 600 The hardware drivers will select the correct clock multiplier based on the baud rate requested 921 600 Auto Description Max bps Clock Mode Data Rate Multiplier QSC LP...

Страница 25: ... The baud rate the port runs at will always be four times the rate requested by the application This mode is useful for legacy applications which cannot request baud rates over 115 200 460 800 X4 for legacy applicattions which cannot request baud rates over 115 200 6 Double click the hardware class Ports Com and LPT Each Quatech PCI Serial Port listed in this class is a child device of the QSC LP ...

Страница 26: ...l which allows the ports UART compatibility mode and FIFO threshold levels to be configured The threshold values of full scale for the transmit buffer and scale for the receive buffer are optimal for most applications Note that the FIFO option for each of the QSC LP 100 s four ports is configured independently QSC LP 100 User s Manual 26 ...

Страница 27: ...QSC LP 100 User s Manual 27 ...

Страница 28: ...ed at values such as 3F8 hex IRQ 4 COM1 or 2F8 hex IRQ 3 COM2 etc Rather the system BIOS assigns the address and the IRQ in a plug and play fashion at boot time Software which is to use the QSC LP 100 must be able to accommodate any valid assignments of these resources For Windows 95 98 2000 ME Windows NT and OS 2 the Quatech device drivers determine what the resource assignments are and proceed a...

Страница 29: ...key has been pressed In this example the QSC LP 100 uses I O base address FF80 hex and IRQ 11 The hardware revision of the QSC LP 100 is also displayed Pressing the N key will show similar information for all non Quatech PCI devices in the system including those devices integrated on the motherboard The QTPCI program is capable only of displaying the PCI configuration It cannot be used to make cha...

Страница 30: ...O regions etc Pressing the N key will show similar information for all non Quatech PCI devices in the system including those devices integrated on the motherboard In this example the Base addr 0 resource is reserved For users interested in even more details PCI BIOS information can be displayed by pressing the B key Pressing the I key displays thePCI interrupt routing table Figure 15 QTPCI EXE Exp...

Страница 31: ...to be connected directly using a one to one cable as shown in Figure 16 In many applications DCEs are unnecessary and in these cases a cable called a null modem cable or modem eliminator cable is used to directly connect two DTE type devices A typical null modem cable is also shown in Figure 17 RxD TxD RTS CTS DTR DSR DCD GND 3 2 4 5 20 6 8 22 7 RI TxD RxD CTS RTS DSR DTR DCD GND 3 2 4 5 20 6 8 22...

Страница 32: ...onnections are listed in Figure 18 5 30 5 26 5 8 5 19 GND 9 18 9 22 9 25 9 29 RI 1 33 1 37 1 41 1 44 DCD 6 16 6 20 6 23 6 27 DSR 4 17 4 21 4 24 4 28 DTR 8 32 8 36 8 40 8 43 CTS 7 3 7 7 7 11 7 14 RTS 2 31 2 35 2 39 2 42 RxD 3 2 3 6 3 10 3 13 TxD D 9 D 44 D 9 D 44 D 9 D 44 D 9 D 44 Port 4 Port 3 Port 2 Port 1 RS 232 Signal Figure 18 QSC LP 100 connector pinouts QSC LP 100 User s Manual 32 ...

Страница 33: ...mbers in hex PCI Vendor ID 0x135C Quatech Inc PCI Device ID 0x0170 QSC LP 100 PCI Class Code Base class 0x07 Simple communications controller Subclass 0x02 Multiport serial controller Interface 0x00 IRQ sourced by INTA Base address 0 0x80 bytes Memory Reserved region Base address 1 0x80 bytes I O Reserved region Base address 2 0x20 bytes I O Serial ports Port 1 at offset 0x00 Port 2 at offset 0x08...

Страница 34: ... Controller 16550 with 16 byte FIFOs Interface One female D 44 connector Four male D 9 connectors using adapter cable Transceivers ICL3245CA High level output 5V min Low level output 5V max Switching speed Power requirements 5 0 volts approx 250 mA Temperature operating 0 to 70 storage 50 to 80 Humidity 10 to 90 QSC LP 100 User s Manual 34 ...

Страница 35: ...the signal transitioning from 3V to 3V The EIA TIA 232 E standard defines a maximum signal transition time ratio of 4 most RS 232 receivers will recognize signal transitions with much larger ratios With a 4 signal transition time ratio EIA TIA 232 E is limited to a theoretical data rate of 200 kbaud If maximum signal transition time ratio is extended to 10 15 20 or even 25 the maximum data rate ac...

Страница 36: ...rent IRQ for the QSC LP 100 An address conflict is unlikely because most PCI based computers will assign I O addresses in such a way that they cannot conflict with ISA bus devices 3 The QSC LP 100 may be defective Contact technical support for instructions Cannot communicate with other equipment 1 Are the cable connections correct Are the cables securely attached 2 Is the software configured with ...

Страница 37: ...QSC LP 100 User s Manual Revision 1 12 November 2006 P N 940 0180 112 QSC LP 100 User s Manual i ...

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